Patent · US Active

Sensing a disturbance along an optical path

US7961331B2 · kind B2 · utility

9Cited by
105References
12Claims
0Family size

Assignee

Inventor

Key dates

Filing dateFeb 1, 2007
Grant dateJun 14, 2011
Priority date—
Expiry dateSep 5, 2027

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01H9/004
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

The present invention relates to a system for sensing a disturbance in a sensing region along an optical path. The sensing system includes: a source of optical radiation; an upstream junction for channelling light along a first path and along a second path, the first and second paths each extending through the sensing region in an acoustically coupled relationship, such that, in use, a disturbance experienced at one of the first and second paths is experienced at the other of the first and second paths; and, a downstream junction for combining light from the first path with light from the second path so as to provide an interferometric signal from which the presence of a disturbance can be inferred.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.